Material handling device



March 11, 1958 I PALMER 2,826,161-

MATERIAL HANDLING DEVICE QX g [77/ 3& 27

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ATTOR/VIKF March 11, 1958 Q i PALMER 2,826,161

MATERIAL HANDLING DEVICE Original Filed April 4, 1949 4 Sheeis-Shget 2 A IIETLE 38 2' 4/ vI: 2-- E V I9 /7 all I I9, I l \\J 20 2 l8 4 I 7 INVENTOR.

HARRY A P411145? I l BY 3 L :}23

March 11, 1958 H. A. PALMER 2,326,161

MATERIAL HANDLING DEVICE Original Filed April 4, 1949 4 Shets-Sheet '3 7 Ill p H INVENTORY I HARRY A P4411454? March 11, 1958 H. A. PALMER ,8 6,

' MATERIAL HANDLING DEVICE Original Filed April 4,- 1949 4 Sheets-Sheet 4 Ilsa-=5 JNVENTOR. HARRY 4 P4411447? MATERIAL HANDLING DEVICE Harry A. Palmer, Birmingham, Mich, assignor to Kelsey- Hayes Company, a corporation of Delaware Original application April 4, 1949, Serial No. 85,447, now Patent No. 2,649,886, dated August 25, 1953. Divided and this application March 2, 1953, Serial No. 339,624

4 Claims. (31. 113---50) The invention relates to a material handling device and refers more particularly to a mechanism for removing work from a press after a die forming operation.

The invention has for one of its objects to provide an improved work removing mechanism.

The invention has for another object to provide a work removing mechanism which makes provision for the necessary relative movement of the parts of the apparatus after the die forming operation before the mechanism operates.

With these and other objects in view the invention resides in the novel features of construction and combinations and arrangements of parts as more fully hereinafter set forth.

In the drawings:

Figure 1 is a cross section on the line 1-1 of Figure 3 through a rim forming apparatus embodying the invention and showing the parts in positions assumed when the ramis in its lowermost position.

Figure 2 is a similar view showing the parts in positions assumed during the raising of the ram.

Figure 3 is a cross section on the line 3-3 of Figure 1.

Figure 4 is a cross section on the line 4--4 of Figure 2.

Figure 5 is a top plan view with the ram removed.

Figure 6 is a cross section on the line 6-6 of Figure 1.

The present application is a division of my co-pending application Serial No. 85,447 filed April 4, 1949, Patent No. 2,649,886 issued August 25, 1953, entitled Apparatus for Forming Rims.

In general, the press is a rim forming apparatus having outer die sections movable radially inwardly into engagement with an annular blank and inner die sections relatively movable axially toward each other and into engagement with the blank and cooperating with the outer die sections to shape the blank to the desired cross sectional contour. In the present instance, the outer die sections comprise the segmental die sections 1 arranged in an annular series and supported on the plate 2 which is vertically movable relative to the bolster 3. The inner die sections comprise the axially aligned lower and upper annular die sections 4 and 5 respectively, the lower die section being mounted on the bolster 3 and the upper die section being mounted on the ram 6 which is vertically movable axially of the bolster.

Each outer die section 1 is keyed and fixedly secured to the holder 7 having concentric inner and outer faces 8 and 9 respectively, the outer die section being secured against the inner face. The holder is slidable in the radial channel 10 in the upper portion of the plate 2 and is slidably engaged by the gibs 11 secured to the plate. The plate is guided and centered with respect to the'bolster by the pairs of diagonally opposite short and long pins 12 and 13 respectively and is mounted on the annular supporting plate 14 which is above the bolster. The supporting plate is centered with respect to the bolster by the upwardly extending annular flange 15 at the inner edge of ice the supporting plate fitting the central opening 16 of the plate 2, this central opening having its center in axial alignment with the center of the bolster.

For radially moving the holders 7 and consequently the outer die sections 1 in unison, there is the cam ring 17 rotatably mounted on the supporting plate 14 and located within and guided by the recess 18 in the lower portion of the plate 2 and concentric with its central opening. The cam ring is formed with the cam slots 19 correspond ingly inclined to the radii passing through the slots and the plate 2 is provided with the radial slots 20 intersecting the cam slots 19. 21 are vertical pins secured to and depend- Each pin has an enlarged portion slidably engaging its associated radial slot and has journaled on its lower end the roller 22 engaging the associated cam slot.

To rotate the cam ring it has secured thereto the arm 23 having connected to its outer end the rod 24 of a piston slidable in the cylinder 25. This cylinder is carried by the bracket 26 which is mounted on one corner of the plate 2. The cylinder is provided with ports at its ends for admitting and exhausting compressed air to'move the piston in opposite directions and thereby rotate the cam ring in opposite directions through a predetermined distance.

The lower inner die section 4 is secured to the upper face of the central plate 27 which is secured to the upper face of the bolster 3 and centered by fitting within the annular recess 28 of the bolster. The lower die section also secures the annular sleeve 29 to the central plate, this sleeve having its upper end portion extending above the upper surface of the lower die section. The sleeve is centered by telescopically engaging the annular shoulder 30 on the central plate and the sleeve in turn centers the lower die section.

The upper inner die section 5 is secured to the lower face of the plate 31 which is carried by the ram 6, the plate being guided by the pair of long pins 13. The plate 31 has at its inner edge the depending concentric annular flange 32 engaging and encircled by and centering the upper die section. The plate 31 also has secured to its lower face the outer ring 33 which is provided with the annular inner bushing 34 for slidably engaging the radially outer faces 9 of the holders 7 during the downward movement of the ram 6. The ring and bushing are centered by forming the plate 31 with the annular shoulder 35 engaging and encircled by the bushing.

For yieldably urging the supporting plate 14 upwardly and holding it in its uppermost position when the ram 6 is raised, fluid pressure operated means is provided. This means comprises the compressed air cylinder 36 of conventional construction, the annular series of vertical pins 37 and 38 and the plate 39 connected to the piston of the cylinder. The cylinder is located below the bolster 3 in axial alignment therewith and as shown is carried by the bolts 40 secured to and depending from the plate 41 supporting the bolster. The pins 37 are slidable in the bolster and abut the supporting plate 14 while the pins 38 are slidable in the plate 41 and abut the pins 37 and the plate 39 which latter is slidable on the bolts 40. The air pressure within the cylinder is substantially constant at all times and is sufficient to normally hold the supporting plate and the parts carried thereby in uppermost position determined by the annular flange 15 abutting the lower die section 4.

To position the annular blank which is to be fashioned by the press the plungers 42 are provided engageable with the lower edge of the annular blank when inserted Patented Mar. 11, 1958 3 11 These plungers are ...slidably.. mounted.v inrsangularly spaced radial slots 43 in the upper portion of the plate 2 and are resiliently urged radially inwardly by the coil springs .44-to positions limited..:by;:thei radiallytzinnertends: ofthe; plungersengagingthe lOWEI;di6'...S66tiOHi4-.-% The radially inner ends arexcammedl bymbeinginclinedndovmw.- wardly and radiallyoutwardly;withtnespect toethe axis ofthepress -so-that upon downward movenientsof the supporting.- plate 14? and .5 the". parts: carriedsitherebyl then lower-die sectionforcesthewplungers radially :putwardly. to positions clearing. the annular nimtblanlc and thezworke. ingrf aeesof .thelower die .seetionrto permiti'the ;desired::- fashioning ofthe annular rim blanket.

For-removing the; rimuafterzit has'ibeena-formed :by; the: die sections. there. are the angularly spaced devices 15 4S-.carr-ied. bythe-platefili. Each devicexomprisesran-n L-shapedmember supported by the pivot pin-.. 46 ton; the. blocks 47 which are mounted imam; upwardlyiopen-inga pocket inthe .plate :31. .Each L=shaped=-member has the arm 43 extending radially inwardly:fron1nthe.-pivot:,-pin: 2 in a radial slot in the .plate. 31-and'-.the-.-arm=49=depending betweenadjacent outerdie sectionsil and their holders-K7. The arm '48 is resiliently held.tupwa-rdly againstthe ranr6 by the coilspring 50. 51 is a rimrengaging IlIEIIk ber carriedby the depending.arm..49; therebeing-,:a=lost motion connection. between the two" In detail theozrim engagingimember is formed withtthethead52.havingvthe finger 53. and with .the hollows-or. atubularmshaizlkn54 which iextendsflupwardly within,the bore .55.-.extending. longitudinally of the depending arm 49. The shank-tier formed. intermediatesits .ends. with the reducedmportion 56v providing. at its..uppercand..lowerusidestthe shoulders 57.and.,58 respectively. 59. is .a shoulderedbolnthreaded... at its upper end .into the vupper end of .r'ththdfififlfilldlllE; arnr49 andextending ;axially..of .theshanlmSdQand,an 35 axially. aligned opening .intheheadSZL: The. boltthasat. its lowerend the head ofiwhich, is adaptedto engage. the lower shoulder.58.. Therim. engaging. membe'nis normally urged downwardly I by the coil. spring filiahuta ting the upper end of the bore 55 and the uppenshonlder. 40 57, thedownwardmovement. being limite'dby. abutment of the head 52 with .the.,plate 2.

In operation, assuming the ram 6 andsupportingplate 14' to be intheir uppermost positions anda rimblank. which is to be formedby' the-press to be restingon the. plungers 42;;"a valve is l turned .by. theloperator. to admit air to the righthand end ottheair cylinder 25' thereby rotating the cam ring. l7"ina cloekwise direction. cam ring operates;thr"ough, the rollersf22' upon. the pins 21 which. aregui'ded by? the radial openingslZiF in' the 0 plate "2 to moveinunison the holders 7.and their. associatedouter die sectionl radially inwardly toengage and tightly grip" the portion of .fsmailest'diameter of the rim blank' toibe-fotrned. This portion forms the base portion .of'the Well "'of1the rim blank formedpby. 55 the press. Thentheoperator pushes the button con trolling the operation "of the ram *6 and the -ram1is lowered during which time it carries' downwardly the plate' 31, the rim removing devices 145, the' upperidie section 5 and theretainingring'33.. Thedower radially go inner camrned' faces"of'thefingersf53" of"the'rim' remov ing devices' slidably engage; the upper fedges: of the rim blankto' beiforrnedand compel the L-shaped members of these devices to, swing againstthe'Tesist-ance oil'ciedi by the coil springs Swallowingv thefingers tojpass 116.65 upperedges. The retainingring 33I' and .its bushing slidably engage the holders '7to;assist inho'lding these holdersand-the outer "die sections 1 in: their radially" innermost positions.., The...-upper diesection 5 slidably. engages the sleeve 2?:md is guidedthereby andthen engagesthe, rim blank to be. formed and movesthc'rim blank;'downwardlyf'along with'fthe outer die sections II, their "holders 7, thesupporting plate 14. and the parts therebetween, during which the plunger-s -42 arecammed radiallyoutwardly by the lower die section 4 -after which..the..rim..blank.to be formed is forced into engagement with the lower die section. The downward move ment of the ram continues to its lowermost position at which time, as shown in Figure 1, the lower and upper die sections have been brought completely into engagement with the rim blank to'be formed and have in conjunction withzthe \outerdiesections completed the forming of .the rimv blank to its desired. cross sectional contour? Theramis then raised and after the retaining ring 33 and its bushing 34 have cleared the holders 7,

airis admitted to. the lefthand end of theair :cylinder 25% members to swing to*positions releasing thefingers-53- from the rim :so that it may drop :onto: the shovel.

What I claim my invention is:

1. In an:apparatus forsforminga rim from an annular blank; which iapparatus hasuaxially, aligned relatively axially movable inner die sections, an annular series: of outer die 'sectionswmova'ble.:radially relative to saidfirst mentioned. die-sections and a plate carrying one of said 1 firstmentionedsidie': sections, means: i form removing the formed rim comprising an L-shaped member pivotally mounted on said plate and a finger havingia portion for engaging theiormed:=rim,u:and a .lostrmotion connection with. saidmiember :betweemsaid ;portion:and the: pivot of: saidi memberzto rpermitorelative zmovementaof-said finger and plate in addition to thenpivotalimovement'of said memberlxr 2. In an apparatus for'forming a rim-rfrom an annular:

blank, which apparatus 1138f; axiallyaligned. relatively axially movable inner die sections, an annular seriesot:v

outer-:die Lsections--mouable radially. relative to .said, first mentioned; diesectionseand a plate carrying :one .of said first mentioneddie sections; means -.for.=removing the formed rim comprising; an- -.L-shaped =member. pivotally mounted on .said plate and having an arm. extending radiallyinwardly .from ztherpivot and a depending arm,. a spring for resiliently urging said first mentioned arm,

upwardly and [a rim=engaging-member havinga rim engaging .finger and-a tubular ishanknextendingupwardly. within and longitudinally-.of. said depending-arm and I formed with internalcppositely facing upper andilower' shoulders .betweenits-ends, a shouldered boltqextending axially of and within said: tubularshank and depending arm.andthreadedwat. itsuupper end into said. L-shaped' member; .saidboltshavinga head-at its lowerend engageablewith.said,.-loWer-:shoulder, and a coilspring within said dependingearmand abutting said-upper shoulder.

3. In a presshavingppper.and lower diessand upper and-slower member-s supporting :said dies and relatively movable. downwardly. and .upwardlytoward and away from each other,-.mechanism for. removing the work from the lower die comprising a member pivotally mounted on saiduppersupporting memberand havinga depending 'arm,-means acting on. said memberto yieldably urge said arm... toward the workfand. a work engaging member havinga work engaging-fingerand'an upwardly extending-shank 'slidablyengagingand guided bylsaid arm and having a lost motion .connectionwithfsaidmember betweensaid finger and the pivot of said pivotallylmounted member to permitirelati've sliding movement of said work engaging finger and saidupper supporting member.

4. In'an apparatus for dic'.forming anannular blank,

which apparatus hasaxially aligned relatively axially movable'upper .and lowerinner die sections engageable with the blank and. a member-supporting said'upper inner die section, mechanism for removing the formed blank comprising L-shaped members pivotally mounted on said supporting member, each L-shaped member having an arm extending radially inwardly beyond the associated pivot and a depending arm externally of said inner die sections, a member movable longitudinally of said depending arm and having a finger for engaging the formed blank, means acting on said L-shaped member to yieldably urge said depending arm toward the formed blank, and means engageable with the radially inner end p01- tions of said radially inwardly extending arms for swinging said L-shaped members in a direction to move said depending arms away from the formed blank.

References Cited in the file of this patent UNITED STATES PATENTS 

